Improvement in metal-bending machines



s.l. LEYSON. MptaI-Bjending Machines.

Patented Jan. 20, 1874-.

Nol 146,538.

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UNITED STATES PATENT OFFICE.A Y' q,

SAMUEL R. LEYSON, OF NASHUA, NEW HAMPSHIRE.

IMPROVEMENT IN METAL-BENDING MACHINES.

Specification forming part of Letters Patent No. 146,538., dated January 20, 1874 application filed November 26, 1873.

To all whom it may concern Beit known that I, `Santoni. R. LEYsoN, of Nashua, in the county of Hillsborough, of the State of New Hampshire, have invented an Improved Machine for use in Bending Metal 5 and lo hereby declare the same to be fully described in the following specification, and represented in the accompanying drawings, of

whicli- Figure l is a top view, Fig. 2 a side elevation, Figs. 3 and 4 longitudinal sections, and Fig. 5 a transverse section, of it.

The machine or invention consists in an adjustable yoke, its operative screw, a main bed or anvil, an angular abutment, and an auxilagainstA an anugular abutment, arranged as shown. The recess receives an auxiliary or adjustable bed, D, whose front end is beveled, as shown, to rest against the inner face of the abutment. From the adjustable bed a circu larly-curved arm, E, furnished with a concen tric slot, b, projects, such arm being carried through a slot, c, in the main bed. A clampscrew, F, furnished with a nut, G, and arranged with the arm E and the stand B, in manner as shown, serves, with the arm, to hold the auxiliary bed in any desirable inclination or obtuse angle with the front faceof the abutment. The said front face with the rest of the front face or edge of the bed A, stands at-a right angle with the upper surface of the bed. A rectangular frame or yoke, H, arranged about the main and auxiliary beds, and supported on the main bed in the manner as repangle, such bar, to the depth required or to the place of bending, is to be inserted downward between the yoke and the front edge of the. anvil, and the yoke, by means of its adjustin g-screw, should be drawn back upon the bar, so as, with the bed, to hold it irmly, after which the bar is to be bent down upon this and into close contact with the upper surface of the bed.

To bend the bar at an obtuse angle, the auxiliary bed should first be raised so that its upper surface may make the requisite angle with the front face of the abutment, after which the clamp -nut should be set up, so as to confine the bed in its raised position. The bar to be bent is next to be inserted between the yoke and the said face of the abutment, and the yoke should be drawn up to the bar, so as to clamp it to the abutment. Finally, the' bar should be bent down upon, and so as to conform to the upper surface of the auxiliary bed.

The machine will be found to be of great advantage to a blacksmith or a carpenter, espe-` cially in bending metallic plates or bars for A brackets or braces.

I claiml The machine, substantially as described, composed of the adjustable yoke H, its operative screw I, thegpnain bed or anvil A, and its abutment C, fndythe auxiliary bed D, pro` vided with the curved arm E and the clampscrew F and nut G, all being combined and arranged in manner and to operate essentially as specified and represented.

SAMUEL R. LEYSON.

Vitnesses: i

R. H EDDY, S. N. PIPER. 

